'Declaration
 
Public Function New( _
   ByVal dataChangeCallback As EasyUADataChangeNotificationEventHandler, _
   ByVal state As Object, _
   ByVal endpointDescriptor As UAEndpointDescriptor, _
   ByVal nodeDescriptor As UANodeDescriptor, _
   ByVal monitoringParameters As UAMonitoringParameters, _
   ByVal subscriptionParameters As UASubscriptionParameters, _
   ByVal autoConditionRefresh As Boolean _
)

'Usage
 
Dim dataChangeCallback As EasyUADataChangeNotificationEventHandler
Dim state As Object
Dim endpointDescriptor As UAEndpointDescriptor
Dim nodeDescriptor As UANodeDescriptor
Dim monitoringParameters As UAMonitoringParameters
Dim subscriptionParameters As UASubscriptionParameters
Dim autoConditionRefresh As Boolean
 
Dim instance As New EasyUAMonitoredItemArguments(dataChangeCallback, state, endpointDescriptor, nodeDescriptor, monitoringParameters, subscriptionParameters, autoConditionRefresh)

public EasyUAMonitoredItemArguments( 
   EasyUADataChangeNotificationEventHandler dataChangeCallback,
   object state,
   UAEndpointDescriptor endpointDescriptor,
   UANodeDescriptor nodeDescriptor,
   UAMonitoringParameters monitoringParameters,
   UASubscriptionParameters subscriptionParameters,
   bool autoConditionRefresh
)

public:
EasyUAMonitoredItemArguments( 
   EasyUADataChangeNotificationEventHandler^ dataChangeCallback,
   Object^ state,
   UAEndpointDescriptor^ endpointDescriptor,
   UANodeDescriptor^ nodeDescriptor,
   UAMonitoringParameters^ monitoringParameters,
   UASubscriptionParameters^ subscriptionParameters,
   bool autoConditionRefresh
)

Parameters

dataChangeCallback

A callback method to be invoked for each significant monitored item change.

state

User-defined state object.

endpointDescriptor

Endpoint descriptor. Identifies the OPC-UA server.

nodeDescriptor

Node descriptor. Identifies the node in OPC server's address space.

monitoringParameters

Contains monitoring parameters (such as the sampling interval, and optional data change filter).

subscriptionParameters

Contains subscription parameters (such as the publishing interval).

autoConditionRefresh

When set, a ConditionRefresh will be automatically performed when needed to keep the condition information up-to-date.

If dataChangeCallback is a null reference, only the OpcLabs.EasyOpc.UA.EasyUAClientCore.DataChangeNotification event is generated, and no callback method is invoked.

You can obtain nodeDescriptor e.g. by calling one of the browsing methods on OpcLabs.EasyOpc.UA.EasyUAClientCore object.

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows